Tieths to maurice t



No. 624,9!7. Patented May IB, |899.

E. J. FEENY. l

PUMP CYLINDER.

(Application filed Apr. B, 1898.) (No Model.)

NTTED STATES PATENT OFFICE..

TIETI-IS TO MAURICE T. MOLONEY, OF SAME PLACE.

PUMP-CYLINDER.

SPECIFICATION forming part Of Letters Patent N0. 624,917, dated May 16, 1899.

Application iiled April 8,1898. Serial No. 676,965. (No model.)

To all whom it may concern:

Beit known that LEDMUND J. FEENY,a citizen of the United States, residing at Ottawa, in the county of La Salle and State of Illinois, have invented a certain new and useful Improvement in Pump-Cylinders, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part ot' this specification.

My invention relates to a pump-cylinder, more particularly to a construction adapted for. deep wells, whichmust necessarily be made of small bore and diameter; and my object is primarily to produce a form of pumpcylinder wherein the capacity may be practically doubled without necessarily increasing the diameter of the pump-cylinder, and consequently the bore of the well, and whereby a continuous flow will result-that is, a ow both upon the up and down strokes of the pump-rod.

In pump-cylinders as usually constructed the water is ejected or raised only on the upstroke, orwhere double-acting` and water is ejected on the up and down strokes half of the usual amount for single-acting pumps is ejected on the up and the other half on the down stroke, so that a continuous flow results without increase in capacity. By the present invention the flow maybe made conigilnuous and at the same vtime practically dou- In accordance with my invention the pumpcylinder is provided with the usual inlet-valve at the lower end, and the reciprocating piston on the pump-rod carries the usual outletvalve. The piston acts in the usual manner to raise a column of water on the upstroke, but carries 'means for displacing a body of water in the pump-cylinder on the downstroke to thus force the displaced body of water through the outlet-valve of the piston on the downstroke and up the tube or casing to the spout or outlet. This displacing device comprises an auxiliarycylinder and piston placed within the main cylinder and operated by the descent of the main piston to displace a body of water. I mount the auxiliary cylinder on the lower side of the main piston to move therewith, while the auxiliary piston remains stationary. The pum p-cylinder may be made of increased length to afford the increased capacity; but the auxiliary parts may be added without increasing the diameter of the pump-cylinder.

I have illustrated my invention inthe accompanying drawings, in which- Figure 1 is a sectional view of the pumpcylinder of my invention. Fig. 2 is a view of the piston and plunger removed. Fig. 3 is a sectional View on line 3 3, Fig. l. Fig. 4- is a sectional view on line 4.4., Fig. l.

Like letters refer to like parts in the several gures.

The pump-cylinder u. is provided at the lower end with a cap a', upon which is mounted the inlet-valve co2. pump-cylinder carries a cap a3, connected with the tube or casing a4. Within the cylinder moves a piston b, mounted upon the pump-rod b and carrying the usual outletvalve b2. To the lower side of the piston b2 is secured the auxiliary cylinder c, adapted to be moved up and down with the piston, and within the auxiliary cylinder c is provided the auxiliary piston c,which is mounted upon the lower end of a pipe or tube c2, communieating with and supported upon a transverse pipe or tube c3, communicating with the atmosphere. The piston c is thus held in a stationary position, and the lower face of the piston c is in communication with kthe atmosphere to avoid the formation of a vacuum or the compression of the air within the auxiliary cylinder during the Operation of the pum p. The auxiliary cylinder c is illustrated as connected withv the lower face of the piston othrough the agency of an extended tubular portion provided with slots c4 o4 to accommodate the stationary cross-piece c3. It is not necessary, however, to make this connecting portion tubular, and any other desired means may be employed for connecting the auxiliary cylinder c with the piston b.

During the operation of the pump the ascent of the piston serves in the usual manner to open the inlet-valve a2 and draw the iiuid into the pump-cylinder through the action of suction. Upon the descent of the piston and The upper end of the- IOC auxiliary cylinder c the auxiliary cylinder displaces a body of water in the pump-cylinder equal to its own volume, and this body of water during the downstroke of the piston is forced upward through the outlet-valve b2 and thence up the tube of the well and out through the spout of the pump. During the downstroke the piston b is in the usual manner moved to a position beneath a column of water in the upper end of the pump-cylinder, and in the upward stroke this column of water is lifted and ejected. Thus during both of the strokes water is ejected, and by making the auxiliary cylinder as large as is consistent with the flow of water upward between the auxiliary cylinder and the pumpcylinder the capacity of the pump may be practically doubled, since upon the upstroke as well as upon the downstroke a body of water is ejected which is equal to the body of Water ejected by an ordinary single-acting pump during a complete up-and-down stroke.

Having fully described my invention, what I claim as new, and desire to secu re by Letters Patent, is-

l. In combination, a pu mp-cylinder having a valve at the lower end, a plunger moving therein, an auxiliary cylinder secured to and moving with said plunger and of a size to leave a duid-passage between the main and auxiliary cylinders, and a piston within said auxiliary cylinder ixed in position, substantially as described.

2. In combination, a pump-cylinder having a valve at the lower end, a plunger moving therein, an auxiliary cylinder closed at one end and a piston therein, both arranged in the space between the plunger and the Valve at the lower end of the pump-cylinder'and EDMUND J. FEENY.

Witnesses:

W. CLYDE JONES, M. R. RocHFoRD. 

